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Thread: 80% vs 93% costs
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12-18-2005, 04:54 PM #1
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I have been told that the cost of a 80% furnace would be about the same as a 93% furnace, since the new chimney liner would add to the 80% cost -- True ?? So why not buy the ore efficient one? thanks
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12-18-2005, 05:47 PM #2
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I would have to say
no and no. And what does a chimney liner have to do with a furnace?
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12-18-2005, 06:40 PM #3
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The 80% furnace would require a new chimney liner to remove exhaust gases from the furnace!!
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12-18-2005, 06:43 PM #4
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You answered your own question...Originally posted by budster
I have been told that the cost of a 80% furnace would be about the same as a 93% furnace, since the new chimney liner would add to the 80% cost -- True ?? So why not buy the ore efficient one? thanks
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12-18-2005, 06:56 PM #5
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Buy the more efficient furnace.
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12-18-2005, 07:08 PM #6
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If you have a water heater you will likely need a chimney liner with the 90% as well Do a search for "orphaned water heater"
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12-18-2005, 08:08 PM #7
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Your projected savings will be 13%, so I would weigh the cost difference between an 80% install and the 93% install and figure out the payback.
You should always choose the most efficient appliance you can afford as long as the energy savings are justified.
A chimney liner should not cost the difference between the two units- unless it is a difficult install or you are choosing a stainless steel liner.
Unless the chimney is located in the interior of the home, you will need a liner for the water heater anyways on a 90+ install.Proper Prior Planning Prevents Piss Poor Performance
"There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider price only are this man's lawful prey. It's unwise to pay too little.
When you pay too much, you lose a little money -- that is all. When you pay too little, you may lose everything, because the thing you bought was incapable of doing the thing it was bought to do.
The common law of business balance prohibits paying a little and getting a lot -- it can't be done. If you deal with the lowest bidder, it is well to add something for the risk you run. And if you do that, you will have enough to pay for something better."
John Ruskin
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12-18-2005, 08:40 PM #8
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I would definitely go with the 93% furnace.
Life is like a jar of jalapenos. What you do today might burn your ass tomorrow.
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12-19-2005, 07:49 AM #9
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Just remember that some people are not crazy about side wall venting. If there's no gas water heater, you might want to see if the PVC vent can be run up the old chimney.
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12-19-2005, 05:48 PM #10
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There was a didcussion here not too long ago about PVC in a masonry chimney. From what I understand, it is against code to do that.
Proper Prior Planning Prevents Piss Poor Performance
"There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider price only are this man's lawful prey. It's unwise to pay too little.
When you pay too much, you lose a little money -- that is all. When you pay too little, you may lose everything, because the thing you bought was incapable of doing the thing it was bought to do.
The common law of business balance prohibits paying a little and getting a lot -- it can't be done. If you deal with the lowest bidder, it is well to add something for the risk you run. And if you do that, you will have enough to pay for something better."
John Ruskin
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12-19-2005, 06:16 PM #11
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Depends on your code. But as long as you're not using the chimney for anything else (unless it's another PVC vented appliance), why not? Is it any different then just punching the PVC through the roof? Many systems show vertical venting in their flue piping diagrams.
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12-19-2005, 06:23 PM #12
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Doesn't have anything to do with vertical or not. It has something to do with the fact that a masonry chimney is a specific type of vent catergory and the PVC is another.
Might be able to get away with it if only PVC flues are in the dead masonry chimney, probably not gonna work if Type B vent liner and PVC are in the same masonry chimney.
Definitely check local codes.Proper Prior Planning Prevents Piss Poor Performance
"There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider price only are this man's lawful prey. It's unwise to pay too little.
When you pay too much, you lose a little money -- that is all. When you pay too little, you may lose everything, because the thing you bought was incapable of doing the thing it was bought to do.
The common law of business balance prohibits paying a little and getting a lot -- it can't be done. If you deal with the lowest bidder, it is well to add something for the risk you run. And if you do that, you will have enough to pay for something better."
John Ruskin
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12-19-2005, 08:56 PM #13
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as long as nothing but pvc goes up old chimney it is nothing more than a heavy duty chase.
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